Goodwill and Intangible Assets - Amortization Expense Related to Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 111,708	$ 133,321	$ 139,681
Core-developed technology
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	65,916	85,331	76,674
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	27,340	24,594	23,104
Contract rights intangible
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	10,886	16,543	33,350
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	3,580	3,156	2,900
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 3,986	$ 3,697	$ 3,653